Apparatus for treating welding-gases.



H. MiJ'LLBR. APPARATUS FOR TREATING WELDING GASES.

APPLIGATION FILED NOV. 26, 1909.

Patented Sept. 8, 1914.

2 SHEETS-SHEET 1.

wmmm H. MfiLLBR. APPARATUS FOR TREATING WELDING GASES.

APPLICATION FILED NOV.26,1909.

Patented Sept. 8, 1914.

2 SHBETS-SHEET 2.

7 I I 1 I i "Mum... .W-1n34.

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ill gir ish? nres prion HANS MilLLER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO UNIVERSAL OXYGEN COMPANY, A CQRPORATION OF WISCONSIN.

APPARATUS FOR TREATING WELDING-GASES.

Specification of Letters Yatent.

Patented Sept. 8, 191d.

Application filed November 26, 1909. Serial No. 529,934.

T 0 (ZZZ whom it may concern:

Be it known-that I, Hans Mimics, a subject of the Emperor of Germany, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Apparatus for Treating Welding-Gases, of which the following is a specifics tion.

My invention relittes to improvements in apparatus for treatingwclding gases.

The object of my invention is to provide .means for separately charging gases burning at high tei'nperaturcs, such as oxygen and hydrogen, with a .vapor having, under ordinary conditions, a lower burning tem livery to the burner. The mixture thus produccd, .burnsat a temperature exceeding that of pure mixtures of hydrogen and oxygen and can be so proportioned. as to secure a proper welding temperature without difii oulty. The mixture is also much less expensive, owing to the introduction of a large quantity of inexpensive gas or vapor.

In the following description. reference is had to the accompanying drawings, 111

views. 1

In my improved apparatus, I first deliver gases burning at high temperatures, such as oxygen and hydrogen, through separate bodies of a liquid hydrocarbon, such as gasolene, benzin, or a liquid com, bination or a combination of acetylene such as acetylene and acetone; after which, the resultant fluids thus separately charged with hydrocarbon, are separately filtered and then separately washed in a. cleansing liquid, preferably water, the latter serving also to prevent [ire from the burner from dashing back to the charging chambers. After being thus filtered and cleansed, the fluids are mixed in a comparatively small chamber and delivered therefrom directly to the burner. By separately passing oxygen and hydrogen through liquid hydrocarbon and separately filtering and cleansing the resultant mixtures before uniting them, a large quantity of hydrocarbon is absorbed -by,the gases, and a higher temperature secured at the burner; the temperature of burninghydrogen being 2500 (3., while the burning temperature of the mixture produced by my improved process is approximately 3000 C, this temperature having been determined by a silica test.

In the construction of my apparatus, I provide flasks or storage tanks A and A, adapted to contain oxygen and hydrogen respectively. The oxygen is delivered through a pipe B into the lower portion of a tank C, which is filled with liquid hydrocarbon, pref erably gasolene or benzin. charged through the pipe B passes upwardly in tank C around the deflecting plates D and E, which extend inwardly from opposite sides of the tank (land form horizontal partial partitions, the oxygen being thus forced to pass back and forth through the gasolene, in order to reach the upper portionof this tank C, so that before escaping from the gas olene, it will be saturated with hydrocarbon vapor. The mixture of oxygen and hydrocarbon vapor is then delivered through a pipe F to the bottom of a filtering chamber G and passes upwardly through the filtering .material 9 to the upper portion of this chamher. It is then again delivered downwardly through a pipe H to the bottom of a water tank I and in passing upwardly through the water, the gas is not only cleansed but cooled, after which it is again delivered downwardly from the upper portion of the chamber I, through a coiled pipe J, which pipe, at its lower end, leads outwardly through the walls of the chamber 1 and is connected to the lower portion of the mixing chamber K, where it is united with the similarly charged hydrogen gas entering the mixing chamber through apipe J. The fluid pro luced by this mixture is delivered directly '0 the burner L.

The hydrogen gas from the tank A is treated in the same manner as that above described for the treatment of oxygen, the

E, and thence through pipe filtering chamber G, pipe ll, water tank I, and

' in chamber I or 1.

coiled pipe J to the mixing chamber K.

t partition chamber M, iillet. with Water, piet'erably interposed between the tanks (l and C, and extends betvvcen the Washing chambers I and l. It also extends bctween these washing chambers and the Chambers 0 and (l This chamber M may 1 be filled through a capped opening at in.

The chambers C and C may be tilled through capped openings N, these caps being preterably unconnected or in mere slip joint connection, and held in position by srravity. They, therefore, serve also as al cty valves and open under lightpressures. The filtering)? material 1/ may consist of any suitable material, such, for example.

as alt rnate layers of fibrous material and oi rhamoal. These filtering chambers may be provided with compartn'ient bottoms into which water, sediment, condensed residue oi hydrocarbon vapor, or any other impurities may drip and be drained oil through ducts t). Each oi the filtering; chambers is preferably provided with an outer all i la. t\veen which. and the filtering rhznnber roper, the water enters. 'lhese preterably open at the top so that an iuit t pressure on the water in the tanks l or l, due to explosions or flash haclcs, will be relieved by blowing part of the water out through the spaces, whereby the apparatus is eiiectually protected against lire from the burner in case the same should flash hacx to the surface of the water Instead of water, any compact, porous mass might be used which would produce the same eti ect. The pipe J, however, is of such length in the coiled portion as to ordinarily prevent [lashes of [lame from reaching the chan'ibers I or I.

.Yith the above described apparatus designed to provide for sal'ely treating two or more high temperature burning gases with hydro-carbon, I notonly secure a fluid adapted for autogrenous Weldingat a comparatively small cost, but I also secure a burner temperature which is .ietter adapt ed for the purpose than either pure hy dro 'gen or simple combinations ot acetylene with oxygen. In oxyhydrogen Welding, without hydrocarbon, the temperature oi? the welding llame, about 2500? (l, is lower than it should be for highest elliciency. On the otheiahand, a simple combination of acetylene and oxygen produces a welding flame of about 23500 C. and with this flame,

there is danger of oveuheating, and the metal is usually rendered brittle, except where thick, heavy-pieces arc to be united. By my improved method, however, the intermediate ten'iperatn e of about 3000 C. is secured. This temperature (3000 I.) is not only approximately correct, but it may be varied somewhat to correspond with the character or the Work, by varying; the proportion of hydro-carbon. Practical tests, hou'eier, have demonstrated that with a temperature of 3000 C. good results may be lr-tained tt'or welding; t ther thick or bin pieces of metal. The flame is short, contains no unnea sary gas, causes no unnecessary expansion oi the metal, and s0 adds to the elementot ectaiomy. The proportion of carbon incorporated with the other cases may be varied by substituting bani tin or acetylene dissolved in acetone or other compounds of carbon for the gasolene in chambers C and C. cal Formula. of ii) tor the simple hydrogezromgeu flame theoretically is changed to lljUtl. when; lasolene is used to saturate h rtlrmg'en and oxygen, and 18 atoms of hydrogen represented in this formula supplied from the gasolene. ll' ith benxol as the charging agent, the formula ll OU, indicates the burner gas, and five atoms of hydrogen are derived from the benxol. \lith'acetylene as the charglug agent, the formula will be I'LQC In practice, hmvever. these theoretical rethe the

suits are not fully realized, the pro portion oi carbon being); even grmter than indicated y the formula, as demonstrated by weight tests. The tests which I have mad however, indicate that the above stated formulas are' approximately correct.

ll'liiie I have described my invention as involving the use of hydrogen as the combustible gas, and of oxygen as the agent of comlmstiom'l do not limit the scope of my invention to these specific. gases, since any eases. maintaining welding temperatures during eomluistion may be employed and charged with liquid hydro-carbon as above described, with reference to the use of hydrogen and oxygen. It is also not absolutely essential that both the combustible gas and the agent of combustion be charged with hyulro-carbon vapor, since partial results may be secured by charging only one of these gases with such vapor, although.

By separately charging the gases under conditions calculated to insure safety in so doing and then mixing them preparatory .to ignition, a muchlarger percentage of carbon. may be incorporated, thus giving a higher heating value and greater economy in the/use of the more expensive gases.

The above described apparatus is also of decided advantage yvhen used in connection withthe electrolytic production of hydrogen andmxygen gases in "that it tends to equalize the consumption of the two gases and their electrolytic production. Electrolysis produces hydrogen and oxygen gases in the proportion of 2 :1, a proportion which is disadvantageous in welding, since for lhus, the chemi- Cir It has been experimentally proven,'that, two

cubic feet of electrolytic hydrogen and one cubic foot of electrolytic oxygen'will absorb three cubic feet of hydro-carbon gas, thus permitting the economical use of all the gas produced by the electrolysis of Water. Furthermore, this process can be used Wherever the melting of metals With burn.- ing gases is carriedout. By the use of the above described apparatus, the gases in present use can bevenriched and made to produce a higher temperature, thus facilitatingthe melting, and making the entire process decidedly more economical.

Having thus described my invention, What I claim as new, and desire to secure by Let ters Patent, is-

1. In apparatus of the described class, the combination of a set of receptacles for separately storing a high temperature burning gas and a combustion. supporting gas, a carbureting chamber connected with each such receptacle to receive fiuid therefrom,

a Water tank in cooling relation to the carbureting chambers and separating said chambers from each other, and a mixing: chamber connected With both carhureting chambers and provided With a burner outlet.

2. In appar'atusof the described class, the combination of a set of receptacles for sep arately storing a high temperature burning gashnd a combustion supporting gas, a. carbureting chamber connected with each such receptacle to receive fluid therefrom, and a mixing chamber connected with both carbureting chambers and provided Witlwa burner outlet, together with a set of auxiliary filtering and flame resisting chambers interposed in the path of the gases between each of the carbureting chambers and the mixing chamber.

3. In apparatus of the described class, the combination. of a set of receptacles for separately storing a high temperature burning gas and -a combustion supporting gas, a

carbureting chamber connected With each such receptacle, to receive fluid therefrom, and a mixing" chamber connected with both carbureting chambers and provided with a burner outlet, together with a filter, and a Water chamber concentric therewith and interposed between each of the carbureting chambers and the mixing chamber, the arrangement being such "that thegas passes upwardly through the Water in the Water chamber.

4. in a device of the described class, the combination of a set of storage repectacles, a set of carbureting chambers, one for each storage receptacle, a filter, an auxiliary filtering and flame resisting chamber for each carburetor concentric with said filter, and means for discharging gas from each carbureter through such filter and auxiliary chambers, an open vent chamber in communication with the bottom portion of the auxiliary chamber, a mixing chamber arranged to receive the gases from the sev eral c ambers.

lo. a device of the described class, the combination of a mixing chamber provided with a burner nozzle, a set of storage receptacles, a set of carbureting chambers, one for each storage receptacle, a filter arranged fo upward. delivery, an auxior each carburetor, means tor delivering .gas from the upper portion of the filter to the lower portion of the auxiliary chamber, a coiled pipe communicating from the upper portion of each auxiliary chamber downwardly therethrouglw to the mixing chamber and adapted to conduct gas from iliary filtering and flame resisting chamber the respective carbureter filter and auxiliary chambers to the mixing chamber, said carburetors, filters and chambers being separated from each other by abody of noncombustible .i. A id.

in testimony whereof lailix my signature in the presence of two Witnesses.

HANS M llLLQR.

"EUGENE G. LUENING,

Lnvnnnrr C. WHEELER. 

